Painting, cleaning, sand-blasting, and general utility air brush



Juiy 15. 1924.

PAINTING, CLEANING, SAND BLASTING, AND GENERAL UTILITY AIR BRUSH 1,591,432 P. BLEAKLEY Filed Jan. 1'7: 1922 771/ [Ill/III i Patented-filly 15,1924.

UNITED-STATES 1,501,432 PATENT 'OF'FlCE.

runnme Arman BLEAKLEZLOFHIQOSI mamas, CALIFORNIL; a

raimrma, cIlEANmG, SAND-BLASTING, AND omamiurnirfiuannusn.

- Application filed January-17,1522. mil ram- To all whom/it mayiconcrn: Be.it known that I, .PURLING ALLEN brush in which the mixing with the air blast,

.eration and to ELEAKLEY, a citizen of the United states,

residing at Los Angeles, in the county of Los An eles and State of California, have inven tloa;

following is a specifica- An gb'ect'of this invention is toprovide meansw etebyair pressure may be utilized to enable a workman to rapidl and readily cleanse automobiles and-the li e at one .op

aint or-varnish the same at v another operation, and whichwhen desired,

can beutilizedto smooth, cleanse or. cut away surfaces upon which such operations aredesired to be performed;

A broadly new, basic-and of the invention-is the provision of an air or introduction into the air blast, of'the liquid .orsolid-to be a plied to the surface to be treated,'is efl'ected insidethe device'.

.An object of the invention. is to make simple provision whereby the ope'ratoriwill:

have) rfect' control over the application of .thebast.

- The appliance is preferably constructed for use-with interchangeable nozzles for dif-" shown and-described herein.

ferent--.. characters of -work and will so be;

Ephject of the invention is to makeprovision whereby the suction that supplies.

the zblat with the liquid or solid to be appliedg'can be regulated accurately and with ease.

Another object is to ingure against accidentalchange of the. blast during opera- 'tion.

An object of the invention is to provide a self-contained air brush the maximum blast of which can be predeterminedwithout theaid-ofa reducing or air regulating valve on theairline.

Some of th eadvantages gained by this invention are,' applic ability for the-direct use of various air pressures ranging from paint J shop pressure which is about pounds per square inch,u'p to iron foundry pressure that is generally about 200 pounds per-- square inc l1;,and an object of the invention is to provide arconstruction whereby the device can beused with moist air as well as r w th dry air in cases where the-moist air will interfere with the work in hand.

a new and useful Painting-Clean ing; Sand-Blastin ,and General Utility Air 1 Brush, of which pioneer reunite .-air brush. :Other obj advantages and invention as adap An object of thi's invention is to provide a removable container fon the'fluidor solid to beejected. Ijhus either the said fluid can be carried with the brush, or the'con'tainer holding said fluid can be detached and a standard street-L inserted to connect-with.

a water, g"as oline'-,; paint, or other supply of fluid, through a flexible tube. and a'hose con- 'nection attached to the street-L. The threadged connections concerned in this lastfeature are therefore referablyof standard dimenf. 1

sions. This eature' permits working with theair brush in any position whateazer,- thus facilitating tionary ob ects.

. Another object ithe yention 'is provision whereby i the brush apply paint for varnishftf 'the' usualgceonsistenc by 'a-h'and-br'ush, main thi new? ihhve been able with a air brushthe'; ,1.

lieavie's't'forms. of asphalt a'intwhich foreit'hasnotbeen possib e to apply with an accompanying-drawing,- t 1e ,subjoined detail '-.descriptionj; and *the aspended claims.

The accompany'itgf rawi lgurei 1- elevation of a-general -.ut'i lity -air brush constructed in accordance v withthis invention and set up'ready for use. Portions are broken away toexpose interior parts.

of the device as shown in F. ig.-,1.

-' Fig. 3 is.a longitudinal section on line illustrates the I t'o'two orms'of nozzle.

Fig. 2 is elev ation f 'th e forward end w, Fig. 2 omitting'theqnozzle and the containenfl r Fig. 4 is a .broken' axlalsection of the air plied through a hose.-

brush detachedfrom the container and sup- Fig. 5 isa planoi-tlielbrush "shown in Fig. 1 and provided with a difi'erent'for'm' ed' as a single casting and comprises the hollow air conducting handle 1 having the 'ji, I

air hose connec'tion 2' and the valve grigilug" 3 on the up er side at the inlet end ofthe-handle. n frontof'the handle is the pressure. equalizing air -chamber 4 "with Y-whichthepassage of the hollow handle connects through the valve chamber Ii that is threaded at' the underside of the handle to receive the externally threaded valve stop bushing '6, which is centrally bored and tapped to receive-the valve regulating screw- 7 that extends into the valve chamber and is adapted to limit the opening of the valve 8 according to. thedepth to which the screw is screwedthrough said bushing.

The butt of the air chamber 4: is provided with a valve stemv guide;9 throughwhich grip are conformed to the palm of'the hand -will be a' so as to beeasily held in and operated by -one hand of the user. The air chamber 4 terminates at its forward end in an internally threaded nozzle connection. 13 and in the-ejector nozzle 14 which .has a frustoconical v:torward end. a

Theejector nozzle is provided with a supply pipe connection 15, a supply chamber 16 and an outletchannel 17 which terminates in athreaded connection 18 into which the nozzle tip 19 is screwed.

Various spray'nozzles may be applied according to the urposes ofthe user and thecharacter cit e work to be performed; and in Fi 1, 2 and 4, is shown at 20 an elongated nozzle with it gradually forwardly widening or expanding bore 21,50 that'there adual expansion of the expansible m ium as it carries the liquid or the solid medium toward the surface to be treated. i

The receiving endof the spray nozzle is provided with a conical bore 22 tapering toward and opening into the smaller end of the expanding bore; and the forward end of the ejector nozzle is frusto-eonical at an angle corresponding to the conical cavity 22; and the connection end 23 of the nozzle 2Q is threaded into the threaded connection 13 to adjust the walls of the conical cavity 22 to the frusto-coliical tip of the ejector nozzle 14. The construction is such that by screwing the; spray nozzle deeply into connection 13 the walls-of the conical cavity 22 will fit upon the tip of the ejector nozzle and entirely out off the air; and by adjusting the spraying nozzle, air can be caused to How around the tip of the ejector in any volume within the limits of the device.

By screwing the nozzle outward, the volume of air is increased and by screwing it in, such volume is decreased; thus increasing or decreasing as the case may be, the amount of suction on the duct of the ejector nozzle. r i V Whenthe nozzle 20 is screwedout, without otherwise changing the conditions, the suction is decreased.

pivdted by of the material supplying container'25 In the usual manner.

Any desired number of nozzle tips, not

shown, may be provided to be interchanged with tip 19 screwed into the ejector nozzle; such nozzle tips having different diameters of bores, as desired.

- The compressed air from hollow handle 1, acts to hold the valve 8 seated. The'valve grip 11 extends forwardly to actupon the supply valve 8 to return it against the air pres'arre,

and the valve regulating screw 7 is adjusted to regulate the extent to which the valve may be opened by the valve grip; thus determining the maximumflow of air to the air chamber 4:.

Thisarrangement inconnection with the adjustability of the nozzle 20 by which the capacity of' the compressed air ejector orifice 27 can be established, enables the oprator to use the air with erfect freedom by fully compressing the va ve grip toward the handle. When the valve grip is ip ed, the full pressure of air is on, and ti e fi eedom of supply can be predetermined by adjustment of the regulating screw 7 according to the ejector orifice 27 around the ejector nozzle 14.

In the form of spraying-nozzle 1.. shown in Figs. 5, 6 and 7, the conical cavity 29 opens forwardly through a more or less elongated outlet .30 of circular form rapidly widening at its outqy'cnd 30 and provided with two oppositely arranged lateral chane ncls 31,-the outside walls a, b of which convyrgc toward the nozzle outlet, and the flat parallel side walls 0 of which, serve to direct the fluid in fiat form.

The nozzle is provided with a milled head 3:! so that it maybe easily screwed in and out. and adjusted to bring the slots to posilion for throwing the flat spray at a ver-' tical, a horizontal. or other angle tothe axis of the container. The nozzle 20 is shown fluted so as to be easily turned by hand. Both the-nozzles 20 and 28 are rovided with threaded inserts 33 upon w ich. a jam nut 3-1. is screwed for the purpose of fixing the nozzle to any adjusted sition by screwing, the jam nut tightly against the end of the main bod of the device.

When it is desire to use a piped supply of fluid to be sprayed, container 25 can be removed, and the suction tube26 detached.

i to the container 25.at t e'will of the opp to the vacuum A street-L of convenient angle can-be inserted at the spray pipe connection 15 which Is of stock dimensions. Then said pi ed su ply of fluid can be led through a flexlble tu .from a hose connection 36. which is screwed into the free end of the street-L.

In practical operation the user will set the device accordin to the re uirements and then will clasp t e handle an the valve grip in one hand-'; ,upon pressing the rip to openjthe regulating valve, the air wi l flow into the main chamber 4 and out through the nozzle inan obvious manner producing suction through the pipe 26 to draw the liquid or solid material from the container 25, and to drive it to the appropriate work. For cleaning "automobile, the nozzle 20 will be mounted a shown'inFigs. 1, 2 and 4, andthe can 25 may be filled with sea suds, distillate, asoline'or-auy other liquis adapted to pe orm the cleaning aired; Likewise the can 25 may be sup lie with sand, if sand blast work 15 desire or with paint or with varnish if paint or'varnish is reuired.' ody polish, for lishing-an automobile;

or dye for dyeing't e to may be supplied erator, and any substancesadapted to flow under the application of air pressure, can be projected through the nozzle at the pleasure of the operator. The vent 37 through the cap 24 serves to supply the atmospheric pressure to cause the substance in the container 25 to flow intothe pipe 26 in response produced at the ejecting outlet.

The spraying nozzle is adapted to screw back to receive the tip 19 which may, at one a position of the parts close off all of the passage through't e nozzle 19 excepting that afforded by the channels, thus to give a fan-likejet or spray. This nozzle 28 is preferable for applying bddy polish,.paint, var- I 'nish, top dye and lacquers of all kinds.

I cla1m: g1. Inan air brush having a nozzle and a handle through which compressed air is supf plied to the nozzle, under control of a valve;

y a hand grip conformable to the palm of the hand. piyoted on the handle and adapted to act upon the valve to open it against air pres sure, when the handle and the hand grip are gripped for that purpose.

-2. In an air brush'having a spray nozzle supplied with fluid under pressure, and a valve to control the supply mounted in a valve chamber; an equalizing chamber between the uontrollingvalve and the spray I nozzle, and said valve chainberopening d1-- 3,- In an'air brush having ahandleand-a spray nozzle supplied with fluid under pres-, sure through said handle, and a valve to.

. contro i..the supply, a whnd'grip pivoted war tween the controllin valve and the spray nozzle, and adjustab e means in -said valve chamber to pro-determine the maximum flow of fluid to-the equalizing chamber,

5. In an air brush having a spray nozzle, a handle through which compressed air is supplied to the spray nozzle and a valve to control the How of air from the handle to the spray nozzle; ahandgrip pivoted on the handle, at the inlet end of said handle and adapted to act on said valve to open it against air pressure when the handle and the hand grip are ripped for that purpose; an ejector nozzle avmg a frusto-co'nical for. ward end and operable by flow of compressed air from the handle adjacent the no outlet from the ejector nozzle; means to supply material .to the bore of the ejector nozzle; and a spray nozzle arranged to receive "the'discharge from the ejector nozzle, and

adjustable toward and from the ejector n0z-- zle to decrease and'increase the flow into the spray nozzle. v i

6. An air brush provided with an equalizing air chamber and with an ejector nozzle and also provided with an elongated spray nozzle having a bore .through which the mixture is sprayed, said spray nozzle being adjustable toward and from the ejector nozzle to regulate the orifice throu h which the air is delivered from the equa izing chamher to the bore of the spray nozzle.

7. An air brush provided with an ejector nozzle and a spray nozzle into which said ejector nozzle discharges, and said air brush also being provided with material supplying means detachably attached to the discharge end of the ejector nozzle; and means to supply the samewith material tobe ejected.

8. In an air brush provided with a hollow handle forming an air passage, an air equal- 116 izin chamber which terminates at its forend in an internally threaded nozzle connection and also in an e ector nozzle which terminates in a threaded tip connection;

a valve chamber connecting said air passage 120 and air chamber; a valve to control the connection between said passage and chamber; a

connection; and a spray nozzle threaded into said threaded nozzle connection and 126 having a bore adapted to receive said nozzle tip and terminating in a conical bore adapted to receive theejectornozzle and form an :air ejector orificetherebe tween which. opens from the air chamber; sa'1d spraynozzle bem increase the air ejector orifice.

ing adapted to be adjusted to decrease and 9. In an air brush provided with an eje ctor nozzle; a spray nozzle into which the ejector -nozzle discharges and which is adjustable relative to the ejector nozzle, and adapt-v ed to predetermine the delivery-of airto the spray nozzle. I

10. An airconstructed with auairhose connection and a valve-grip lug at the inlet end of the handle, and also comprising a pressure equalizing air chamber and a valve chamber which connects the passage between the hollowhandle and the pressure equaliz- "ing'air. chamber; said 'valve chamber being threaded; an externall threaded andcenchamber; a screw screwed through said bushing and adapted to limit the opening of the valve; and a valve grip pivotally connected to-the grip 'lug and adapted to be graspedby the hand'to operate said valve againstthe air pressure-in said valve cham-- ber.

-11. In an air brush provided with an .air

brush comprising a mam bodytrally bored and tappe valve stop bushing;.. a-valve in and extending through saidivalve chamber which terminates at its forward endin-an internally threadednozzle connection and also in an ejector nozzle, that has a frusto-conical forward end; a spray nozzle opening from the'air-chamber around. the

from the air chamber.

12. In an airbrush an ejectornozzle prov flow of air from the air chamber pastthe I ejector nozzle. '1

' 13. In'an air an ejector nozzle of a spray nozzle between end of the ejector nozzle and adapted to be.

adjusted'to decrease and increaseithe outletbrush, the combination with" which and the ejector nozzle there is provided an outlet around the ejector nozzle; said outlet being laterally extended by channels to give a fan shape to the spray issuing from the spray nozzle.

14. In an air brush, thecombination with an ejector nozzle of a spray nozzle between which and the ejector nozzle: there is provided an outlet around the ejector nozzle; said outlet being laterally extended by channels to give'a =fan shapeto the; spray issuing from the spraynozzle; said spray nozzlebei'ng adjustable to control the out-flow of air around the ejector nozzle. :1

151 Inan air brush the combination .with

an. ejector nozzle. ofaspray nozzle between which and the. ejector. nozzle there .is provided an outlet aroundthe ejectonnozzle; said outlet being laterallyextended by channels; having .forwardl converging walls adapted to give a fan s ape to the spray issuing from the spray nozzle; saidspra nozzle being adjustable to control; the put ow of air aroundthe ejector nozzle. 17 In an air brush he comblhation with an e'ector nozzle of a spray nozzle between whic and the ejector. nozzle there is providcd an outlet around ,the ejector nozzle; said outlet, being laterallyextended by channels having forwardl converging walls adapted to give a fan ape to the spray issuing from the spray nozzle; said channels also' having flat parallel walls.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 11th day of January, 1922.

. PURLING ALLEN BLEAKLEY. Witness:

J was R. TowNsENn. 

